looking for solution about proxies

Hello, i need to create 100 accounts on a websites. i had used top rated premium vpn but everytime said these ips was blacklisted. i had posted for help on this forum and people's suggested me for used private proxies. because of i m not familiar with proxies thats why i need some info about proxies. please help me out.
1. i need 100 proxies for create 100 accounts?
2. which is the best place for buy proxies?
3. i have to pay per months like as vpn or one time payment then i would use lifetime?

Thanks.

for accounts probably need private proxies
1 proxie per account if there going to the same forum more than once.
sellers charge monthly u dont get to keep them, have a look here
https://www.blackhatworld.com/forums/proxies-for-sale.112/

ok then i will buy 100 proxies from there

if all else fails just pm the sellers your requirements
and wait for a reply.